UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

14th Jun 2021, 5:11 pm

What about an RF isolating transformer for the (required) aerial and earth, a few 10's of turns of each primary and secondary on a ferrite toroid or the like would do the job. At MW/LW frequencies a scrap SMPS (Switched Mode Power Supply) core will do nicely. IT would fit inside and be reversible. Rather a splendid set too.

14th Jun 2021, 5:11 pm	#8
Guest Guest Posts: n/a	Re: Murphy A124 Earthing considerations? What about an RF isolating transformer for the (required) aerial and earth, a few 10's of turns of each primary and secondary on a ferrite toroid or the like would do the job. At MW/LW frequencies a scrap SMPS (Switched Mode Power Supply) core will do nicely. IT would fit inside and be reversible. Rather a splendid set too.